Warp conditioning process for tying-ln



WARP CONDITIONING PROCESS FOR TYING-IN MACHINES Stoney Drake, Norfolk, Va., assignor to Drake Corporation, Norfolk, Va.

No Drawing. Application October 29, 1954, Serial No. 465,741

9 Claims. (Cl. 2872.6)

This invention relates to a process of warp conditioning and more particularly, for conditioning the leading and trailing ends of warp sheets. It relates particularly to a method of conditioning the leading and trailing ends of warp sheets or" high-twist yarns, preferably synthetic yarns, to prevent snarling, twisting or otherwise fouling up the yarns in the steps of attaching the yarns to a warp beam yarns, it is applicable to any yarns having twist sufiiciently high to cause twisting, or snarling thereof when being handled.

performing this threading operation, the individual threads must be manipulated manually or by means of a machine such as the well-known Barber-Colman type tying-in machine. When these threads are of the high-twist type, and particularly when S-twist threads are doubled with Z-twist threads to form a two-ply warp yarn, there is a tendency for the threads to kink or snarl and to twist about one another, forming a sort of rope-like mass. It therefore becomes difficult, if not impossible, to handle the processing in a satisfactory manner.

When the warp on a loom beam is about exhausted (and it is necessary to replenish it), it is desirable to attach the individual threads of the new warp respectively to those of the loom beam, to avoid the necessity of going through the threading up steps. To do so, the warp beam of the loom, if it is not completely loaded, with the trailing ends of the old warp, together with the drop wires,

heddles and reed, is brought to the tying-in stand. Here newwarp are respectively tied to those of the old warp. This may be done manually, but is commonly done with tying-in machines, one example of which is the well-known Barber-Colman Tying-In Machine. It is in this operation that the inherent snarling, kinking, or twisting of I the high-twist warp ends is particularly objectionable.

The warp sheet is next divided or leased by passing alternating groups of threads on either side of 2,734,254 Patented Feb. 14, 1956 However, when the warp contains or is composed of high-twist yarns, but especially when ply yarns composed of S-twist singles, plied with Z-twist singles are used, the troubles above noted are encountered. This invention is aimed at preventing these troubles.

It is, therefore, an object of this invention to treat the leading and trailing ends of a warp sheet to prevent snarling, kinking or intertwisting of the warp threads during handling.

Another object of the invention is to treat portions of the warp, while on the slasher, to prevent kinking or snarling of the end thereof during handling.

A further object of this invention is the application, to a portion only of the warp of a twist-setting medium while such warp is on the slasher.

An additional object of this invention is the application of a twist-setting medium to the end portions only of a warp sheet.

Other objects will appear during the course of the following specification.

After threading a warp containing threads which are likely to kink or snarl, onto a sla her and prior to starting the run of a new beam, a portion for a few yards, say three or four yards, near the leading end, should be treated to prevent the inherent kinking, snarling or twisting. This should be done as the machine is started and before it fog of twist-setting liquid.

However, in mills where most of the warp used is of the high-twist type or of the type wherein S-twist singles are doubled or plied with Z-twist singles, it may be expedient to equip the slasher with spray heads. Devices such as atomizerrated by the lease rods and the comb. These spray heads may be supplied with twist-setting liquid under pressure from a suitable container. When in use, they will form a fog or mist above thewarp which will operate as above noted for the hand sprayer method.

As noted above, about six or eight yards of warp are treated. After the machine is stopped, the usual slasher tapes are applied at about the middle of the band of conditioned warp. The sheet of warp is now severed between a pair of slasher tapes and one conditioned portion becomes the trailing end of the warp Wound on the loom beam about to be dolled. The other end will become the leading end of a warp about to be wound on a new loom beam.

Thus, there is provided a warp, composed of high-twist yarns having an inherent tendency to twist or snarl, which is amenable to use in tying-in machine or in threading into loom harness, drop wires and reeds in a substantially inert condition without any annoying tendency to snarl, kink, intertwist or form objectionable ropes.

The products most desirable for this use should contain a water-soluble lubricant of oily nature or an emulsion of a lubricant, a suitable penetrating agent, a hygroscopic agent, and a fungicide. Solutions which have been found satisfactory contain oily materials such as soap, sulfonated castor oil, sulfonated olive oil and other sulfonated vegetable or animals oils with which may also be included some non-sulfonated animal, vegetable and/ or mineral oils, such as neats-foot oil, soya bean oil, white mineral oil, etc. These oils or oily materials and soaps are all included by the expression oily derivative material. These materials may also be included by the expressions, emulsifying agents, homogenizing agents, or sulfonated high-molecular weight, aliphatic materials.

To cause quick penetration, it is desirable to use hygroscopic materials, such as glycerine, glycol, and ethanol amines.

As a fungicide, it is satisfactory to use phenol, cresol, naphthols, chlorinated and/or nitrated phenolic compounds, pine oil, formaldehyde, fluorides, etc.

The ingredients of the solution should be of such nature as not to cause sticking or gumming of the machine arts.

It should also be apparent from the foregoing description that the loom beam with the warp yarns wound thereon and treated as above described, constitutes a novel article of manufacture.

Although a specific example of the process only has been given, it is to be understood that the process is not to be limited except within the scope of the appended claims.

What I claim is:

l. A method of warp preparation for high-twist warp yarns which comprises applying a twist-setting liquid to only a portion of each end of a sized and dried warp sheet during slashing as it is being prepared for weaving, to prevent kinking and snarling of the ends of the warp yarns during threading up of a loom and during new warp.

2. The process of claim 1 in which liquid is sprayed in atomized form above just prior to the completion of a warp.

3. In a method of warp preparation for high twist yarns which includes sizing and drying at warp sheet of such yarns, separating and leasing the warp yarns and winding the sized yarns onto a loom beam; the improvement which comprises, just prior to the completion of a beam, applying to a portion of the yarns which constitute the trailing end of the yarns on one beam and the leading end of the yarns on another beam, a twist setting composition in mist form.

4. The method of claim 3 in which the twist-setting liquid comprises a water solution of an oily material and contains a penetrating agent, and a fungicide.

5. As a new article of manufacture, a sheet of sized warp yarns having an inherent tendency to kink and snarl, wound on a loom beam in which a portion of such warp at the leading and trailing ends only of the warp are twistset to prevent kinking during threading up a loom and during tying-in a new warp.

6. As a new article of manufacture, a sheet of sized warp yarns having inherent tendency to kink and snarl having the ends only of the individual yarns twist-set for a distance of from three to four yards to prevent kinking and snarling during threading up and tying-in operations.

7. The method of twist-setting the end portions only of a warp of yarns, having an inherent tendency to kink and snarl, which comprises, while the yarns are on a slasher, after the sizing and drying of said yarns and immediately prior to the dofiing of a wound mass thereof, applying to said warp yarns from above a mist of a twist-setting liquid.

8. A method of Warp preparation for high-twist warp yarns which comprise applying a twist-setting material to a portion of each end of a sized and dried warp sheet, as it is being prepared for weaving, to retard the snarling tendency of the high-twist yarns during threading-up of a loom and during tying-in of a new warp.

9. A method of warp preparation for high twist yarns on a slasher having customary sizing, drying and leasing means, the steps comprising just prior to a dofiing operation, spraying onto the sized and dried warp sheet a twist setting liquid in mist form, applying at least a pair of slasher tapes at about the middle of the treated area and severing the so treated warp between the tapes.

References Cited in the file of this patent UNITED STATES PATENTS Bouhuys May 5, 1936 Goodings et al. Jan. 25, 1944 tying-in of a the twist-setting the warp threads 

